DR. WILLIAM JOSEPH FARRELL M.D.
NPI 1417951203
Internal Medicine - Cardiovascular Disease in Wallingford, CT
About Dr. William Joseph Farrell M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM JOSEPH FARRELL M.D. (NPI 1417951203) is an individual cardiovascular disease provider in Wallingford, Connecticut, licensed in Connecticut (030271) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS and is a graduate of University Of Iowa, Rj & L Carver College Of Medicine (1987).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. William Joseph Farrell M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show William Farrell reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Wallingford, CT 06492
- Reassigned Medicare billing, Connecticut enrollment
- 9 clinicians in this Medicare group
Wallingford, CT 06492
- Reassigned Medicare billing, Connecticut enrollment
- 84 clinicians in this Medicare group
Meriden, CT 06451
- Reassigned Medicare billing, Connecticut enrollment
- 505 clinicians in this Medicare group
Hartford, CT 06102
- Reassigned Medicare billing, Connecticut enrollment
- 1,333 clinicians in this Medicare group
Hartford, CT 06106
- Reassigned Medicare billing, Connecticut enrollment
- Medicare enrollment name: Consulting Cardiologists PC
- 21 clinicians in this Medicare group
Windsor, CT 06095
- Reassigned Medicare billing, Connecticut enrollment
- 34 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 17
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06492 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
Other Providers at the Same Location NPPES 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WALLINGFORD, CT 06492
WALLINGFORD, CT 06492
WALLINGFORD, CT 06492
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Farrell's NPI number?
The NPI number for William Farrell is 1417951203. It was assigned to this individual provider in the NPPES registry on June 9, 2005.
Where is William Farrell located?
William Farrell practices at 1062 Barnes Rd Ste 300, Wallingford, CT 06492. The listed phone number is (203) 265-9831.
What is William Farrell's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is William Farrell enrolled in Medicare?
Yes. William Farrell is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for William Farrell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Farrell reassigns Medicare benefits to 6 organizations: Masonicare Health Center (Wallingford, CT), Gaylord Hospital, Inc. (Wallingford, CT), Midstate Medical Center (Meriden, CT), Hartford Hospital (Hartford, CT), Consulting Cardiologists, P.C. (Hartford, CT) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Farrell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for William Farrell was last updated on November 29, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. William Joseph Farrell, M.D. · NPI 1417951203
Cardiovascular Disease physician in Wallingford, Connecticut. Individual provider, active in the CMS NPPES registry since June 9, 2005.
## Identity
- **NPI:** 1417951203 (Entity type: Individual)
- **Enumerated:** June 9, 2005
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** 030271 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 1062 BARNES RD, STE 300, Wallingford, CT 06492-2576
- **Phone:** (203) 265-9831 · **Fax:** (203) 265-2977
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Masonicare Health Center (NPI 1588638688, Wallingford, CT); Gaylord Hospital, Inc. (NPI 1730137753, Wallingford, CT); Midstate Medical Center (NPI 1154425288, Meriden, CT); Hartford Hospital (NPI 1407806391, Hartford, CT); Consulting Cardiologists, P.C. (NPI 1053353656, Hartford, CT); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Iowa, Rj & L Carver College Of Medicine, class of 1987
## Record status
- **NPPES last updated:** November 29, 2011
- **Other identifiers:** Medicare UPIN F64828; Medicare PIN 060001106 (CT); Medicaid 001302710 (CT)
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Source: [NPI Profile](https://npiprofile.com/npi/1417951203) · Data from the CMS NPPES public registry.